diff --git a/cpu/esp32/periph/uart.c b/cpu/esp32/periph/uart.c
index 74ae3fec63b0f..366dc5d6f4a34 100644
--- a/cpu/esp32/periph/uart.c
+++ b/cpu/esp32/periph/uart.c
@@ -399,7 +399,7 @@ static int _uart_set_mode(uart_t uart, uart_data_bits_t data_bits,
     /* workaround for hardware bug when stop bits are set to 2-bit mode. */
     switch (stop_bits) {
         case UART_STOP_BITS_1: _uarts[uart].regs->conf0.stop_bit_num = 1;
-                               _uarts[uart].regs->rs485_conf.dl1_en = 1;
+                               _uarts[uart].regs->rs485_conf.dl1_en = 0;
                                break;
         case UART_STOP_BITS_2: _uarts[uart].regs->conf0.stop_bit_num = 1;
                                _uarts[uart].regs->rs485_conf.dl1_en = 1;